hex1848:
It works fine for Firefox if you specify the UploadType as flash. What is the default UploadType for the control if it's not specified? Is it Auto? Maybe you have a bug in your capability detection code for newer Firefox Browsers when the control is inside an iframe?
1. If Ajax Uploader detects SilverLight is installed on your PC, It will use the SilverLight solution.
2. If Ajax Uploader detects Flash is installed on your PC, It will use the Flash solution.
3. If Ajax Uploader detects Iframe is supported on your Browser, It will use the Iframe solution.
4. Ajax Uploader will render as default ASP.NET upload control.
For your issues, i think you may have problems with SilverLight solution.
If our iframe online demo works for you, can you download the latest build then try again?
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